什么是异常?python用异常对象(exception object)来表示异常情况。遇到错误后,就会引发异常。如果异常未被处理或捕获,程序就会用所谓的回溯(traceback)终止执行。>>> 1 / 0Traceback (most recent call last): File "", li....
分类:
编程语言 时间:
2014-06-25 16:25:40
阅读次数:
604
Basalt has a higher hardness with strength 300mp as well as the higher silicon content. And during the actual crushing and broken industry, the basalt...
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其他好文 时间:
2014-06-25 14:57:40
阅读次数:
270
Microsoft has an article that explains how to automate PowerPoint using VBFor some odd reason they've entitled it How to automate Powerpoint using VB....
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其他好文 时间:
2014-06-25 14:28:25
阅读次数:
157
一.DB(Data block)A data block is the smallest unit of storage in anOracledatabase. Every database has a default block size (specified when the database...
分类:
数据库 时间:
2014-06-25 14:20:00
阅读次数:
430
一、简介单例模式主要用的作用是用于保证程序运行中某个类只有一个实例,并提供一个全局入口点。单例模式(Singleton)为GOF阐述的标准24种设计模式中最简单的一个。但随着时间推移,GOF所阐述的单例实现已不能完全满足实际应用。"ensure a class has only one instan...
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其他好文 时间:
2014-06-25 13:20:34
阅读次数:
193
SafeGod在coolpad(4.0)上运行,登陆进去的设备列表界面遇到的问题,三星和索尼没有这个问题。
06-24 15:23:06.897: E/AndroidRuntime(12655): FATAL EXCEPTION: main
06-24 15:23:06.897: E/AndroidRuntime(12655): java.lang.RuntimeException: ...
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移动开发 时间:
2014-06-25 07:54:20
阅读次数:
305
java.sql.SQLException: ORA-01789: query block has incorrect number of result columns
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:125)
at oracle.jdbc.driver.T4CTTIoer...
分类:
数据库 时间:
2014-06-25 07:39:35
阅读次数:
481
下面是mybatis配置文件xxxx.xml缺失resultMap的错误:
严重: Servlet.service() for servlet [SpringMVC] in context with path [/ZHDM] threw exception [Request processing failed; nested exception is org.mybatis.spring.MyB...
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其他好文 时间:
2014-06-25 07:35:36
阅读次数:
261
Android开发环境搭建时遇到问题的解决方法
错误1:
The connection to adb is down, and a severe error has occured.
[2013-08-31 16:11:56 -com.qihoo.subject]
You must restart adb and Eclipse.
[2013-08-31 16:11:56...
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移动开发 时间:
2014-06-24 23:51:52
阅读次数:
514
Exception in thread "main"
java.lang.RuntimeException: No-args constructor for class java.sql.Timestamp does not exist. Register an InstanceCreator with Gson for this type to fix this problem.
#关于使...
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其他好文 时间:
2014-06-24 17:52:56
阅读次数:
207